/*
 * Copyright 2004 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jbfilter.jsp.converters;

import java.io.IOException;

import javax.servlet.jsp.JspException;

import org.jbfilter.jsp.JbfilterSimpleTagSupport;
import org.jbfilter.jsp.JbfilterTag;
import org.jbfilter.jsp.ScopeSupport;

public class ToStringTag<T> extends JbfilterSimpleTagSupport {

	private Converter<T> converter;
	private T value;
	private String var;
	private ScopeSupport scopeSupport = new ScopeSupport(JbfilterTag.toString);

	
	@Override
	public void doTag() throws JspException, IOException {
		super.doTag();
		String s = converter.toString(value);
		if (var != null) {
			// put the converter into the asked scope, that's all
			setAttribute(var, s, scopeSupport.getScope());
		} else {
			if (s != null) {
				getJspContext().getOut().println(s);
			}
		}
	}
	public void setValue(T value) {
		this.value = value;
	}
	public void setConverter(Converter<T> converter) {
		this.converter = converter;
	}
	public void setScope(String scopeAsString) throws JspException {
		scopeSupport.setScope(scopeAsString);
	}
	public void setVar(String var) {
		this.var = var;
	}
}
